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Did you know?
The horizontal fraction bar was introduced by the Arabs.
Did you know?
The term bacteria was devised in the 19th century by German biologist Ferdinand Cohn. He based it on the Greek word "bakterion" meaning a small rod or staff. Cohn is considered to be the father of modern bacteriology.
Did you know?
Your heart beats over 36 million times a year.
Did you know?
The average office desk has 400 times more bacteria on it than a toilet.
Did you know?
Cancer has been around as long as humankind, but only in the second half of the twentieth century did the number of cancer cases explode.